Enhance plugin logging a bit. This adds logging in a few more places, especia...

webkit/glue/plugins/plugin_list.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/glue/plugins/plugin_list.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 90 matching lines @@
 bool PluginList::CreateWebPluginInfo(const PluginVersionInfo& pvi,
                                      WebPluginInfo* info) {
   std::vector<std::string> mime_types, file_extensions;
   std::vector<string16> descriptions;
   SplitString(WideToUTF8(pvi.mime_types), '|', &mime_types);
   SplitString(WideToUTF8(pvi.file_extensions), '|', &file_extensions);
   SplitString(WideToUTF16(pvi.type_descriptions), '|', &descriptions);
 
   info->mime_types.clear();
 
-  if (mime_types.empty())
+  if (mime_types.empty()) {
+    LOG_IF(ERROR, PluginList::DebugPluginLoading())
+        << "Plugin " << pvi.product_name << " has no MIME types, skipping";
     return false;
+  }
 
   info->name = WideToUTF16(pvi.product_name);
   info->desc = WideToUTF16(pvi.file_description);
   info->version = WideToUTF16(pvi.file_version);
   info->path = pvi.path;
   info->enabled = true;
 
   for (size_t i = 0; i < mime_types.size(); ++i) {
     WebPluginMimeType mime_type;
     mime_type.mime_type = StringToLowerASCII(mime_types[i]);
@@ skipping 100 matching lines @@
     if (disabled_plugins_.find(it->path) != disabled_plugins_.end())
       it->enabled = false;
   }
 
   plugins_ = new_plugins;
   plugins_loaded_ = true;
 }
 
 void PluginList::LoadPlugin(const FilePath& path,
                             std::vector<WebPluginInfo>* plugins) {
+  LOG_IF(ERROR, PluginList::DebugPluginLoading())
+      << "Loading plugin " << path.value();
+
   WebPluginInfo plugin_info;
   const PluginEntryPoints* entry_points;
 
   if (!ReadPluginInfo(path, &plugin_info, &entry_points))
     return;
 
   if (!ShouldLoadPlugin(plugin_info, plugins))
     return;
 
   if (path.value() != kDefaultPluginLibraryName
@@ skipping 208 matching lines @@
   }
 
   return did_disable;
 }
 
 void PluginList::Shutdown() {
   // TODO
 }
 
 }  // namespace NPAPI